// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CC_PLAYBACK_DISPLAY_ITEM_H_
#define CC_PLAYBACK_DISPLAY_ITEM_H_

#include <stddef.h>

#include <memory>

#include "cc/base/cc_export.h"
#include "cc/debug/traced_value.h"
#include "third_party/skia/include/core/SkPicture.h"
#include "ui/gfx/geometry/rect.h"

class SkCanvas;

namespace cc {

namespace proto {
    class DisplayItem;
} // namespace proto

class CC_EXPORT DisplayItem {
public:
    enum Type {
        CLIP,
        END_CLIP,
        CLIP_PATH,
        END_CLIP_PATH,
        COMPOSITING,
        END_COMPOSITING,
        DRAWING,
        FILTER,
        END_FILTER,
        FLOAT_CLIP,
        END_FLOAT_CLIP,
        TRANSFORM,
        END_TRANSFORM,
    };

    virtual ~DisplayItem() { }

    virtual void ToProtobuf(proto::DisplayItem* proto) const = 0;
    virtual sk_sp<const SkPicture> GetPicture() const;
    virtual void Raster(SkCanvas* canvas,
        SkPicture::AbortCallback* callback) const = 0;
    virtual void AsValueInto(const gfx::Rect& visual_rect,
        base::trace_event::TracedValue* array) const = 0;

    Type type() const { return type_; }

protected:
    explicit DisplayItem(Type type)
        : type_(type)
    {
    }

    const Type type_;
};

} // namespace cc

#endif // CC_PLAYBACK_DISPLAY_ITEM_H_
